Detection of asinine gammaherpesviruses in association with pulmonary fibrosis in free-ranging donkeys.

A mortality event among recently captured feral donkeys () occurred in south-central Utah in 2016. The deaths were sporadic, and clinical signs were indicative of respiratory disease, likely associated with an infectious etiology. Ten of 13 donkeys autopsied had moderate-to-severe interstitial fibrosing pneumonia, and one had pyogranulomatous pneumonia.